Mount Rushmore is one of America's most instantly recognizable national monuments. What did it take to carve the four presidents heads sixty feet tall each into solid granite? |
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Title: | Mount Rushmore | |
Air Date: | July 17, 2016 | |
Runtime: | 60 min | |
DonnyDarko : 80 Years to the Day and Joe Biden Poos himself in front of the world.